.head {
    position: relative;
    background-color: gray;
    background-image: url('https://holyflame.oss-cn-hongkong.aliyuncs.com/jjj/head.png');
    background-size: 100% auto;
    background-repeat: no-repeat;
    height: 30vw;
    margin:5vw;
}

.headtop {
    display: flex;
    justify-content: space-around;
}

.headtop div {
    width: 10vw;
    height: 4vw;
    text-align: center;
}
#logo{
    background-color: palevioletred;
}
div img {
    height: 100%;
    width: 100%;
    object-fit: contain;
}

div a {
    font-size: 2vw;
    color: white;
    text-decoration: none;
}

a:hover {
    font-size: 2.5vw;
    color: deepskyblue;
}

a:visited {
    font-size: 2px;
    color: white;
}

.slogan {
    font-size: 7vw;
    color: grey;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -85%);
    width: 50vw;
    text-align: center;
}
.welcome{
    display: flex;
    justify-content: center;
    background-color: silver;
    height: 20vw;
    margin: 5vw;
    
}
#welimg{
    margin-top:5vw;
    background-image: url('https://holyflame.oss-cn-hongkong.aliyuncs.com/jjj/welcome.png');
    background-size: 100% auto;
    background-repeat: no-repeat;
    height: 23vw;
    width: 18vw;
}
#vedio{
    display: block;
    margin-left:-13vw;
    margin-top: -10vw;
    z-index: 9999999999999999999;
    height: 15vw;
    width: 20vw;
}
#weltxt{
    margin-top: 5vw;
    background-color: white;
    height: 23vw;
    width: 35vw;
    text-align: center;
}
#weltxt span{
    font-size: 3.5vw;
}
#weltxt p{
    font-size: 1.45vw;
    text-indent: 2em;
}
.welcome div div{
    background-color: white;
}
.welcome div div img{
    margin-left: 0;
    margin-right: auto;
}
#intro{
    margin: 15vw;
    text-align: center;
}
#intro>div{
    display: flex;
    justify-items: space-around;
}
#intro>div>div{
    width:20vw;
    margin:2vw;
}
#intro>div>div>p{
    font-size: 1.2vw;
}
#know {
    text-align: center!important;
    background-color: black;
    width: 17vw;
    height: 3.2vw;
    margin-left: auto;
    margin-right: auto;
}
.pf{
    position: relative;
}
.pens{
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    margin-left: 5vw;
    margin-right: 5vw;
    height: 20vw;
    background-color: silver;
}
.pen1{
    background-color: red;
    background-size: 100% auto;
    background-repeat: no-repeat;
    height: 10vw;
    width: 40vw;
    margin: 0vw;
}
.pen1>img{
    height: 100%;
    width: 100%;
    object-fit: fill;
    }
.pen2{
    
    background-size: 100% auto;
    background-repeat: no-repeat;
    height: 10vw;
    width: 40vw;
}
.pen2>img {
    height: 100%;
    width: 100%;
    object-fit: fill;
}
.small{
    text-align: center;
    font-size: 1.46vw;
    width: 6.5vw;
    height: 4.8vw;
    background-color: palevioletred;
    color: white;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.say {
    display: flex;
    justify-content: center;
    background-color: darkgrey;
    height: 20vw;
    margin-left: 5vw;
    margin-right: 5vw;
    margin-bottom: 18vw;
}

.say>div {
    margin-top: 1.6vw;
}

.say1 {
    background-color: darkgrey;
    height: 6vw;
    width: 45vw;
    text-align: center;
    font-size: 3vw;
    color: white;
    line-height: 0.1em;
}

.say2 {
    background-color: white;
    height: 40vw;
    width: 45vw;
    text-align: center;
    font-size: 2.2vw;
}
.say2 img{
    display: block;
    height: 5vw;  
}
.say2 p{
    margin: 1vw;
}
#buy{
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: 2.5vw;
    line-height: 0em;
}
#buy>div{
    display: flex;
    justify-content: space-around;
}
#buy>div>div>img{
    display:block;
    width: 15vw;
    object-fit: fill;
    border: 2vw solid white;
}
.short{
    height: 20vw;
}
.long{
    height: 30vw;
}
#fbuy {
    background-color: black;
    width: 17vw;
    height: 3.2vw;
    margin-left: auto;
    margin-right: auto;
}
#new{
    margin: 5vw;
    display: flex;
    justify-content: center;
    height: 20vw;
    background-color: darkgray;
}
#new>div{
    height: 20vw;
    width: 44vw;
    margin-top: 5vw;
    background-color: white;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
}
#new>div>div{
    
    height: 6vw;
    width: 44vw;
    display: flex;
    justify-content: space-between;
    font-size: 1.1vw;
}
#new>div>div>img{
    display: block;
    width: 20vw;
    height: 100%;
    object-fit: contain;
}
#new>div>div>p{
    display: block;
    width: 25vw;
}
#fnew {
    background-color: red;
    width: 17vw;
    height: 3.4vw;
    margin-left: auto;
    margin-right: auto;
    margin-top: 10vw;
    margin-bottom: 5vw;
}
.foot{
    
    background-image: url('https://holyflame.oss-cn-hongkong.aliyuncs.com/jjj/foot.png');
    object-fit: contain;
    background-repeat: no-repeat;
    background-size: 100% auto;
    opacity: 0.9;
    margin-left: 5vw;
    margin-right: 5vw;
    margin-bottom: 0vw;
    height: 40vw;
}
.foot>div{
    display: flex;
    justify-content: center;
    align-items: flex-end;
    text-align: center;
}
.foot>div>span{
    display: block;
    font-size: 1.5vw;
    height: 5vw;
    width: 6vw;
}
#lgdown{
    font-size: 8vw;
    height: 10vw;
    width: 25vw;
    color: white;
}
.end{
    margin-left: 5vw;
    margin-right: 5vw;
    margin-top: 0vw;
    text-align: center;
    font-size: 3vw;
    height: 4vw;
    background-color: grey;
}